Two Tunnels - August 2026
Two Tunnels is a running event in Bath held on Sunday 16 August 2026 with start and finish at Brickfields Park, Twerton. The route passes through two converted railway tunnels that run beneath the city: Devonshire Tunnel (408 m) and Combe Down Tunnel (1,672 m). The tunnels are well lit, surfaced for shared use, and are accessible to runners, walkers and cyclists.
The tunnels were part of the Somerset and Dorset Railway, closed in 1966 and reopened as a shared path after restoration by the Two Tunnels Group and Sustrans. The event notes that each race distance includes the longest underground section in the UK.
The programme includes a wide range of race distances and formats, from short family colourburst events to ultramarathon and relay options. Tickets for this edition are currently sold out. The event contributes £1 per runner to Sustrans and participants who fundraise for Sustrans receive a free running vest and other items; over £30,000 has been raised to date.
Distances and formats include:
- 500 m Colourburst
- 2 km Colourburst
- 5 km
- 10 km
- Half marathon (multiple half marathon options)
- Marathon
- 50 km Solo and 50 km Pair
- 5 x 10 km relay
Visit the organization's website for the most recent information.
About the event
A truly special race that not only takes in many of Bath's beautiful attractions, but also has the longest underground section for each race distance in the UK! Cutting right under the city of the Bath, the two tunnels offer a truly unique running experience. The Somerset & Dorset Railway closed in 1966 and until April 2013, the tunnels had been sealed and inaccessible. Thanks to the hard work and dedication of the Two Tunnels Group and Sustrans over a period of 7 years, the two tunnels now have a new lease of life as a shared use path. The first tunnel, the Devonshire Tunnel is 408m long and the second tunnel, Combe Down Tunnel is 1672m long. Both tunne
